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Low melting point glass powder and preparation method thereof

A low-melting glass and glass technology, applied in the field of materials, can solve the problems of high softening temperature and large expansion coefficient of glass powder, and achieve the effects of short melting time, small expansion coefficient and convenient operation.

Inactive Publication Date: 2015-11-18
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-melting point glass powder, which solves the problems of high softening temperature and excessive expansion coefficient of the existing glass powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of above-mentioned low melting point glass powder, concrete steps are as follows:

[0023] Step 1, weigh SiO respectively according to weight percentage 2 12~14%, PbO50~60%, Na 2 O15~20%, Al 2 o 3 6~7%, B 2 o 3 2.5~3.5%, Li 2 O0~2%, CaO0~2%, ZnO0~2%, MgO0~1%, P 2 o 5 0~1%, K 2 00~0.5%, the sum of the percentages by weight of the above components is 100%;

[0024] Step 2, ball-mill each component weighed in step 1 in a planetary high-energy ball mill with a ball-to-material ratio of 10:1 and a rotation speed of 300-350 rpm for 2-4 hours, then let it stand for 12 hours, and then place it at 1100 Melting in a lifting furnace at ℃ for 1 hour to obtain molten glass, then quenching the molten glass and then drying to obtain small glass particles, and finally the small glass particles in a ball-to-material ratio of 2.5:1 and a speed of 450-500 rpm Ball milling in a planetary high-energy ball mill for 8 to 10 hours to obtain low-melting point gl...

Embodiment 1

[0029] Step 1, weigh SiO respectively according to weight percentage 2 14%, PbO60%, Na 2 O16%, Al 2 o 3 7%, B 2 o 3 3%, the sum of the weight percentages of the above components is 100%;

[0030] Step 2, ball mill the components weighed in step 1 in a planetary high-energy ball mill with a ball-to-material ratio of 10:1 and a rotation speed of 300 rpm for 4 hours, then let it stand for 12 hours, and then place it in an elevating furnace at 1100°C Melt glass in a medium for 1 hour to obtain molten glass, then quench the molten glass and dry it to obtain small glass particles, and finally grind the small glass particles in a planetary high-energy ball mill with a ball-to-material ratio of 2.5:1 and a speed of 500 rpm After 8 hours, low melting point glass powder was obtained.

Embodiment 2

[0032] Step 1, weigh SiO respectively according to weight percentage 2 12%, PbO55%, Na 2 O18%, Al 2 o 3 6%, B 2 o 3 3%, Li 2 O2%, CaO2%, ZnO2%, the sum of the weight percentages of the above components is 100%;

[0033] Step 2, put the components weighed in step 1 in a planetary high-energy ball mill with a ball-to-material ratio of 10:1 and a rotation speed of 350 rpm for 2 hours, then let it stand for 12 hours, and then place it in a lifting furnace at 1100°C Melt glass in a medium for 1 hour to obtain molten glass, then quench the molten glass and dry it to obtain small glass particles, and finally grind the small glass particles in a planetary high-energy ball mill with a ball-to-material ratio of 2.5:1 and a speed of 450 rpm After 10 hours, a low-melting point glass powder was obtained.

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Abstract

The invention discloses low-melting-point glass powder. The low-melting-point glass powder comprises the following components in percentage by weight: 12%-14% of SiO2, 50%-60% of PbO, 15%-20% of Na2O, 6%-7% of Al2O3 and 2.5%-3.5% of B2O3, wherein the sum of the weight percentage of the components is 100%. The invention also discloses a preparation method of the low-melting-point glass powder. The preparation method comprises the following steps of: ball-milling the components, standing still, smelting to obtain molten glass, hardening and quenching the molten glass, drying to obtain small glass particles, and finally carrying out ball-milling on the small glass particles to obtain the low-melting-point glass powder. The low-melting-point glass powder disclosed by the invention has the advantages of low softening temperature, low quality loss ratio, large specific surface area and small particle sizes. The preparation method of the low-melting-point glass powder, disclosed by the invention, has the advantages of simpleness, high production efficiency and low cost.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a low-melting-point glass powder, and also relates to a preparation method of the low-melting-point glass powder. Background technique [0002] With the increasingly serious problem of energy shortage, the development of new energy sources has become one of the main tasks of scientists in various countries. Solar energy is an infinitely usable and clean energy source, and it is the best choice for human beings to develop new energy sources; therefore, silicon solar energy The birth of the battery has become a rookie in the energy world. [0003] Silver electronic paste for silicon solar cells is mainly composed of three parts: silver powder, binder phase and organic carrier, and each part has its own special function. The bonding phase in the silver electronic paste for silicon solar cells is glass powder, and its main function is to firmly combine the cured film layer with the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C12/00
Inventor 杨卿黄锦阳杨啊涛杨生春梁淑华
Owner XIAN UNIV OF TECH